The Behaviour of Multi-Storey Steel Frames in Fires

Moss, Peter; Clifton, G Charles

doi:10.1080/13287982.2002.11464896

Cited by 4 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent research carried out in several countries (e.g. see [3]) as well as in New Zealand [4][5][6] has shown that it is possible to predict the performance of steel buildings which survive typical fires, albeit with substantial deformation in the beams.…”

Section: Introductionmentioning

confidence: 99%

Effect of support conditions on the fire behaviour of steel and composite beams

et al. 2004

Self Cite

View full text Add to dashboard Cite

SUMMARYThe fire behaviour of a structural steel beam or a steel and concrete composite beam in a fire compartment depends on many factors including the nature of the supports at the ends of the beam.This paper describes a detailed analytical investigation into the effects of support conditions on the fire performance of steel and composite steel-concrete beams exposed to linearly increasing temperature with time, as well as to standard and parametric fires.The support conditions include simply supported, fully fixed, and a range of intermediate cases, providing varying levels of axial and flexural restraint. In each case, a comparison of the deflected shape with the evolving internal forces shows unusual but predictable behaviour, strongly dependent on the stress-strain relationship of the steel. In addition to the standard support conditions, a spring was used to simulate the effect of axial restraint provided by adjacent spans of a multi-span beam. This case showed that the spring stiffness had a very considerable influence on the behaviour of the beam and the time to failure under an increasing fire temperature. This paper gives new insight into the structural performance of steel and composite beams, observed in recent fires such as the eight storey steel frame at Cardington. There are major implications for structural designers.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of support conditions on the fire behaviour of steel and composite beams

et al. 2004

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ongoing results have been presented in a number of papers, the latest in 2001 [3]. A range of natural fire curves representing fires of medium and high structural fire severity were generated from previous work [4] for these analyses and include the effects of a migrating fire.…”

Section: Introductionmentioning

confidence: 99%

“…The current stage in this research involves applying the modelling concepts developed [2,3] to the eight-storey steel framed test building at the Cardington LBTF. In that instance, the building and fire characteristics are known and hence the predicted output from the model can be compared against the known experimental response.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the Cardington LBTF steel frame building fire tests

Moss

Clifton

2004

Fire and Materials

Self Cite

View full text Add to dashboard Cite

SUMMARYThe design of multi-storey steel framed office and other commercial buildings for fire resistance has traditionally been undertaken on the premise that the building will suffer partial or total collapse unless the beams and columns are insulated from temperature rise under fully developed fire conditions. Since 1990, a growing body of evidence has shown that there is a substantial inelastic reserve of strength available from a typical composite steel beam/concrete floor slab system with uninsulated beams. An intensive research effort is underway in a number of countries to determine the extent of this reserve of strength and the mechanisms involved in its delivery. The research discussed in this paper involves experimental testing and advanced finite element (FE) modelling. It is leading on to design procedure development to take account of the inelastic reserve of strength available from this type of building system. This paper describes advanced finite element analyses undertaken on the complete building system of an eight-storey steel framed building subject to severe fire conditions. This building is located at the Cardington Large Building Test Facility in the UK and was subjected to a number of large-scale fire burnout tests in 1995 and 1996. The test programme included a number of large-scale fire tests using wood cribs and office furniture as the fuel.Three of the large scale fire tests were modelled, covering different enclosure characteristics and fire conditions. The paper gives an overview of the model used and compares the analytical results with those obtained experimentally. Differences between the results are noted and some explanations given for these.

show abstract

“…Recent research by Moss and Clifton [3][4][5][6] has shown that it is possible to predict the performance of steel buildings which survive typical fires, albeit with substantial deformation in the beams. Other examples of the numerical modelling of steel frames and buildings for fire situations can be found in (for example) Franssen et al [7], Liu [8], Moore and Lennon [9] and Moss [10].…”

Section: Introductionmentioning

confidence: 99%